Draft-rigging mechanism.



Q H. PORSYTH.

DRAFT RIGGING MEGHANISNL APPLIUAT'ION FILED 1112.13.1904.

'925,167'. Patented Jun@ 15,11909.

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if een. einer wie, elle in i* inv-f" fi hwy l m lider@ i' ihf GEORGE E. FORSYTH, OF CHICAGO, ILLNIS.

Specieaton ci Lettere Fatent.

Pygmalion flied Apre ia, 19e/i. semi iig. zeef/21.

To all whom n may concern.:

Be it known that l, Geenen H. FORSYTH, citizen of the United States, residing et iflhieege, in the county o'f. Cook and State of lllinois, here invented certain new end useiil lniproveinents in Dreftdigging Mechanism, of which the following is :i speciica tion.

My invention belongs to that class of mechanism adapted to return the drew-liars oi ears, when drawn to one side, le n centi-el position. Such dei-:ieee have heretofore usually consisted entirely of separate mechanisms, especially rilesigned for this purpose. My pre -nt invention, lioivever, belongs to e type draw-bar ceiitering device wherein the actuating force reside'E in the resistance medium of the draft rigg n instead of in en independent medium, such es :i coil spring transversely enge-ging the draw bei'. lt. must, therefore, be evident that iiiy linieniioin among other or" its meritorious features,

lends toward economy in ciu* construction ey reducing the innnber of parts necessary te produce certain functions.

ln the accompanying drawin'is --lfigiires l end 3 lire plzizi views oll two possible Al'oi'ins embodying' the principle of lthe inyentioii; and Figs. 2 end el :ire respectively iletziile in eiossseelion, on the lines Q-Q and 4me; of

' Figs. l. und 3.

. ii rlhe drawn Us show e eoniinoii torni oi lotion, the (lrzift rigging hepi'orideil willi :i resie'rzince medium in the i'oifin of the usuel coil spring. lt will De eviilent, lioirvever, thzit my invention inny 'De as readily ilpplieil lo :i varied construction of steel or wooden eer sind may he nsed wiih any forni of dreit rigging; of eiilicr the spring or lr' 'on type. i,

ln the drawings l. represents elaziiiiiellier-rms lorniing` tl ceiitei--sills olf Lilie c:

ne rl" e dimwhzir 2 is siiitzilily supported :it ils Onteiicnil by e stirriip or carry-iron l? fastened 'to the under .siile of the ehnnnelbeams. .lfhe ordinary yoloi-strfip 1l is seciirefl io the inner end ol the drauf-bnr by ineens' of liliei-rirets rl, ille draft rigging spring' 5 hein@v loczifeil within the yolef strain engaging thex studs l und abutting against the followers (l. The letter in tiii'n Contact centrally with ends of the dre'wezir and yoke-strap and :it their ends with the follower stops secured to the channellieziins l ley rivets 1l. The followers :irre provided with iipright lugs 9 adapted to loosely engage the sides of the yohe-strep- 'lhe rounded Surfaces l2 on the outer feces el? the followers cooperate with the contacting surfaces :it the end of the drew-her end the yel est'.'fep to always cause the strains of helling and ali-:itt to be applied atv points substantially on the longitudinal axis of the resistance inediiim. The ends Y1.3 of the followers nre also provided Willi inclined or curved surfaces 13 adapted lo engage co operating oblique or inclined surfaces lll on the followernlops in such 2i. incliner as t0 tend to center the drew-ber under the 'lnust oli "the resistance inediuin. l

ln one torni of my invention, as shown in Fig. 1i, the lfollfmers have substantially straight surfaces neer their ends at l5. these surfaces contacting with corresponding snrfeces e? the :'ffollowei'stogs, when the drawher is in its central or normal position. ln llig. 3 lthe followers are provided with eitensione l) lying beyond the ciiitved surfaces i3 and sti-eight Surfaces 15a. ln Figs. .l :ind 2 there ai i shown supporting hers 16 loi: Athe vend portions oll the folloiiiers, said mrs eeV ing seeiiijed to the 'llolloweistops by the rivets 18 secured liy the heads lf?. ln l? end l e 'form et follower-stop construction is shown in which the place of these Supporting liars is leihen ley the projeelioiis 16a of the follower-stops themselves. As will be clerirly Heen in Fig. lthe inclined surfaces oi. ilie follower-slop do notl extend tliioiinjlin ont the 'liill height olf the follower-stop lont are 'present only :it their lien find bottoni 'portions, :it 'which pointe they coperiile with the rounded surfaces or shoulders lil of the -followers themselves. The iollmiier-stops nre hollowed or recessed loetween 4their top and bottoni portions lo receive the projectin@` extremities l?) oi ilie 'followers'.

".l`lie :iclion ol? iny ini'eiiltion is :is 'loll-eiis: 'l'lvlhei'i the drew-lier is drown to one side. :is shown by dotted lines in Figs. l and 3; there .the upright lugs/of the followers, a lateral increment. During this sidewise displacement of the followers the latter, through con tact of their ends with the co"perating inclined surfaces of the follower-stops, are given an angular movement during which the tension of the resistance medium is maintained. Ifthe draw-bar is then released., the outward thrust of the resistance medium will cause the diagonally-disposed and inclined surfaces of the followers to slidingly engage with their respective follower-stops; the result of such action being the return of the followers to their normal position transversely of the car. Through the engagement of the upright. lugs of the followers with the sides of the yoke-strap the draw-bar will also be returned to its central position. During the angular movement of the followers, when the draw-har is drawn to one side, the centrally-eiIrved surfaces on the outside faces of the followers are slightly withdrawn from contact with the ends of the draw-bar and yoke-strapg As a consequence the recentering of the draw-bar takes place 'without rubhing friction between the latter and the followers, and therefore the action occurs the more readily.

`While .l have shown my invention as embodied in the constructions indicated in the drawings, it should be borne in mind that I do not limit the scope of my invention to the mechanical embodiments illustrated.

I claim:

l. he combination with a. drawbar capable of angular movement and a resistance medium, of ay draft rigging follower, and rigid members of the car7 said follower having` separated means adapted to engage and cooperate with said rigid members of the car, whereby there is imparted to the drawbar, when drawn to one side, a tendency to return to a central position.

2. The combination with a. draw-bar Capable of angular movement, a resistance medi um, and a draft rigging member having .lateral displacen'ient relatively to the center of the car, of a member carried by the car cooperating therewith and adapted under the action ofthe resistance medium of the draft rigging to return the draw-bar, when drawn to one side,to a central position.

3. The combination with a draw-bar :fapable of angularI movement and a resistance, medium, of a draft rigging follower, and members carried by the car, said follower being provided at its extremities with means adapted to cooperate with said members of the car, whereby there is imparted to the draw-bar, under the action of the resistai'ice medium of the draft rigging, a tendency, when drawn toone side, to return to a central position.

l l l i l l l l l l l i 4. The combination with a draw-bar, eapable of angular movement, va resistance medium and a draft rigging follower, of rigidi members carried by the car and engaged by said follower, one of the cop,-

erating surfaces of said parts being inclined,

whereby there is imparted to the draw-bar,`

when drawn to one side, a tendency under the action of the resistance medium to return to a central position.

5. The combination with a draw-bar capable of angular movement, a resistance mediumand a draft rigging follower, of rigid members carried by the car having inclined surfaces, said follower having inclined surfaces adapted to cooperate with the inclined surfaces of said rigid members of the ear, whereby there is'iinparted to the drawbar, when drawn to one side, a tendency, under the action of thc resistance medium, to return to a central position.

6. The combination with a draw-bar ca pablo of angular movement and a stop member of the car, of draft rigging includin a resistance medium and a member adapte to cooperate with said stop member whereby, when said members becoine relatively displaced, there is imparted thereto, under the action of the resistance medium of the draft rigging, a tendency to return to a central position. l

7. The combination with a draw-bar capable of angular movement, a resistance medium and stop members carried by thel car, of a draft rigging member provided with abutting surfaces disposed at right angles to the longitudinal center line of the car and haring inclined surfaces adapted to coperate with said stop members of the car whereby there is imparted to the draw-bar, when drawn to one side, a'tendcncy to return to a central position.

8. The combination with a draw-bar capable of angular movement, a resistance medium and a said draw-bar or extension thereof, of means cooperating with the follower when the drawbar is laterally displaced serving to relievethe contact between said follower and draw-bar or its extension to facilitate the return movement of the draw-bar to central position.

t). The combination with a draw-bar capable of argular movement and a follower normally contacting with the end of said draw-bar or an extension thereof, of means whereby under all conditions 0f lateral displacement of the draw-bar said endwise contact of the latter or its extension with the follower is relieved.

l0. ,'lhe combination with a resistance medium and a follower capable of endwis'e movement transversely of the draft rigging of stops cooperating with the ends 0f Sai follower, said stops and follower having cooperating means whereby, under the lthrust of the vresistance medium, said follower is normally maintained in central position.

ll. The combination with a draw-bar capable of angular movement and a series of follower-stops havin oblique or inclined Walls, of a series of followers and an interposed resistance medium, said followers hav- GEORGE H. FORSYTH. y

lVitnesses: I

FREDERICK C. GOODWIN -WM. V. MILLINGTON. 

